<span style="color: #222222;">Talking to All India Radio, Dr. N. N. Mathur, Director, Lady Hardinge Medical College, New Delhi has said that extra precaution is the only key to survive until the vaccine for the treatment of COVID-19 is under trial.&nbsp;<br />”<br />”He advised the people not to avoid wearing masks and ensure hand sanitation during travel in bus and other public transport.</span><br />